diff options
Diffstat (limited to 'src/com/android/launcher3/Utilities.java')
| -rw-r--r-- | src/com/android/launcher3/Utilities.java | 197 |
1 files changed, 176 insertions, 21 deletions
diff --git a/src/com/android/launcher3/Utilities.java b/src/com/android/launcher3/Utilities.java index cbc978585..80d4b22ce 100644 --- a/src/com/android/launcher3/Utilities.java +++ b/src/com/android/launcher3/Utilities.java @@ -18,14 +18,18 @@ package com.android.launcher3; import android.app.Activity; import android.content.ActivityNotFoundException; +import android.content.ComponentName; import android.content.Context; import android.content.Intent; +import android.content.pm.ApplicationInfo; +import android.content.pm.PackageInfo; +import android.content.pm.PackageManager; +import android.content.pm.PackageManager.NameNotFoundException; +import android.content.pm.ResolveInfo; import android.content.res.Resources; import android.graphics.Bitmap; -import android.graphics.BlurMaskFilter; import android.graphics.Canvas; -import android.graphics.ColorMatrix; -import android.graphics.ColorMatrixColorFilter; +import android.graphics.Color; import android.graphics.Matrix; import android.graphics.Paint; import android.graphics.PaintFlagsDrawFilter; @@ -33,8 +37,10 @@ import android.graphics.Rect; import android.graphics.drawable.BitmapDrawable; import android.graphics.drawable.Drawable; import android.graphics.drawable.PaintDrawable; -import android.util.DisplayMetrics; +import android.os.Build; import android.util.Log; +import android.util.Pair; +import android.util.SparseArray; import android.view.View; import android.widget.Toast; @@ -51,10 +57,6 @@ public final class Utilities { public static int sIconTextureWidth = -1; public static int sIconTextureHeight = -1; - private static final Paint sBlurPaint = new Paint(); - private static final Paint sGlowColorPressedPaint = new Paint(); - private static final Paint sGlowColorFocusedPaint = new Paint(); - private static final Paint sDisabledPaint = new Paint(); private static final Rect sOldBounds = new Rect(); private static final Canvas sCanvas = new Canvas(); @@ -65,6 +67,8 @@ public final class Utilities { static int sColors[] = { 0xffff0000, 0xff00ff00, 0xff0000ff }; static int sColorIndex = 0; + static int[] sLoc0 = new int[2]; + static int[] sLoc1 = new int[2]; // To turn on these properties, type // adb shell setprop log.tag.PROPERTY_NAME [VERBOSE | SUPPRESS] @@ -74,7 +78,7 @@ public final class Utilities { /** * Returns a FastBitmapDrawable with the icon, accurately sized. */ - static Drawable createIconDrawable(Bitmap icon) { + public static FastBitmapDrawable createIconDrawable(Bitmap icon) { FastBitmapDrawable d = new FastBitmapDrawable(icon); d.setFilterBitmap(true); resizeIconDrawable(d); @@ -99,6 +103,13 @@ public final class Utilities { } /** + * Indicates if the device is running LMP or higher. + */ + public static boolean isLmpOrAbove() { + return Build.VERSION.SDK_INT >= Build.VERSION_CODES.L; + } + + /** * Returns a bitmap suitable for the all apps view. Used to convert pre-ICS * icon bitmaps that are stored in the database (which were 74x74 pixels at hdpi size) * to the proper size (48dp) @@ -305,22 +316,21 @@ public final class Utilities { return scale; } + /** + * Utility method to determine whether the given point, in local coordinates, + * is inside the view, where the area of the view is expanded by the slop factor. + * This method is called while processing touch-move events to determine if the event + * is still within the view. + */ + public static boolean pointInView(View v, float localX, float localY, float slop) { + return localX >= -slop && localY >= -slop && localX < (v.getWidth() + slop) && + localY < (v.getHeight() + slop); + } + private static void initStatics(Context context) { final Resources resources = context.getResources(); - final DisplayMetrics metrics = resources.getDisplayMetrics(); - final float density = metrics.density; - sIconWidth = sIconHeight = (int) resources.getDimension(R.dimen.app_icon_size); sIconTextureWidth = sIconTextureHeight = sIconWidth; - - sBlurPaint.setMaskFilter(new BlurMaskFilter(5 * density, BlurMaskFilter.Blur.NORMAL)); - sGlowColorPressedPaint.setColor(0xffffc300); - sGlowColorFocusedPaint.setColor(0xffff8e00); - - ColorMatrix cm = new ColorMatrix(); - cm.setSaturation(0.2f); - sDisabledPaint.setColorFilter(new ColorMatrixColorFilter(cm)); - sDisabledPaint.setAlpha(0x88); } public static void setIconSize(int widthPx) { @@ -337,6 +347,25 @@ public final class Utilities { } } + public static int[] getCenterDeltaInScreenSpace(View v0, View v1, int[] delta) { + v0.getLocationInWindow(sLoc0); + v1.getLocationInWindow(sLoc1); + + sLoc0[0] += (v0.getMeasuredWidth() * v0.getScaleX()) / 2; + sLoc0[1] += (v0.getMeasuredHeight() * v0.getScaleY()) / 2; + sLoc1[0] += (v1.getMeasuredWidth() * v1.getScaleX()) / 2; + sLoc1[1] += (v1.getMeasuredHeight() * v1.getScaleY()) / 2; + + if (delta == null) { + delta = new int[2]; + } + + delta[0] = sLoc1[0] - sLoc0[0]; + delta[1] = sLoc1[1] - sLoc0[1]; + + return delta; + } + public static void scaleRectAboutCenter(Rect r, float scale) { int cx = r.centerX(); int cy = r.centerY(); @@ -358,4 +387,130 @@ public final class Utilities { "or use the exported attribute for this activity.", e); } } + + static boolean isSystemApp(Context context, Intent intent) { + PackageManager pm = context.getPackageManager(); + ComponentName cn = intent.getComponent(); + String packageName = null; + if (cn == null) { + ResolveInfo info = pm.resolveActivity(intent, PackageManager.MATCH_DEFAULT_ONLY); + if ((info != null) && (info.activityInfo != null)) { + packageName = info.activityInfo.packageName; + } + } else { + packageName = cn.getPackageName(); + } + if (packageName != null) { + try { + PackageInfo info = pm.getPackageInfo(packageName, 0); + return (info != null) && (info.applicationInfo != null) && + ((info.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) != 0); + } catch (NameNotFoundException e) { + return false; + } + } else { + return false; + } + } + + /** + * This picks a dominant color, looking for high-saturation, high-value, repeated hues. + * @param bitmap The bitmap to scan + * @param samples The approximate max number of samples to use. + */ + static int findDominantColorByHue(Bitmap bitmap, int samples) { + final int height = bitmap.getHeight(); + final int width = bitmap.getWidth(); + int sampleStride = (int) Math.sqrt((height * width) / samples); + if (sampleStride < 1) { + sampleStride = 1; + } + + // This is an out-param, for getting the hsv values for an rgb + float[] hsv = new float[3]; + + // First get the best hue, by creating a histogram over 360 hue buckets, + // where each pixel contributes a score weighted by saturation, value, and alpha. + float[] hueScoreHistogram = new float[360]; + float highScore = -1; + int bestHue = -1; + + for (int y = 0; y < height; y += sampleStride) { + for (int x = 0; x < width; x += sampleStride) { + int argb = bitmap.getPixel(x, y); + int alpha = 0xFF & (argb >> 24); + if (alpha < 0x80) { + // Drop mostly-transparent pixels. + continue; + } + // Remove the alpha channel. + int rgb = argb | 0xFF000000; + Color.colorToHSV(rgb, hsv); + // Bucket colors by the 360 integer hues. + int hue = (int) hsv[0]; + if (hue < 0 || hue >= hueScoreHistogram.length) { + // Defensively avoid array bounds violations. + continue; + } + float score = hsv[1] * hsv[2]; + hueScoreHistogram[hue] += score; + if (hueScoreHistogram[hue] > highScore) { + highScore = hueScoreHistogram[hue]; + bestHue = hue; + } + } + } + + SparseArray<Float> rgbScores = new SparseArray<Float>(); + int bestColor = 0xff000000; + highScore = -1; + // Go back over the RGB colors that match the winning hue, + // creating a histogram of weighted s*v scores, for up to 100*100 [s,v] buckets. + // The highest-scoring RGB color wins. + for (int y = 0; y < height; y += sampleStride) { + for (int x = 0; x < width; x += sampleStride) { + int rgb = bitmap.getPixel(x, y) | 0xff000000; + Color.colorToHSV(rgb, hsv); + int hue = (int) hsv[0]; + if (hue == bestHue) { + float s = hsv[1]; + float v = hsv[2]; + int bucket = (int) (s * 100) + (int) (v * 10000); + // Score by cumulative saturation * value. + float score = s * v; + Float oldTotal = rgbScores.get(bucket); + float newTotal = oldTotal == null ? score : oldTotal + score; + rgbScores.put(bucket, newTotal); + if (newTotal > highScore) { + highScore = newTotal; + // All the colors in the winning bucket are very similar. Last in wins. + bestColor = rgb; + } + } + } + } + return bestColor; + } + + /* + * Finds a system apk which had a broadcast receiver listening to a particular action. + * @param action intent action used to find the apk + * @return a pair of apk package name and the resources. + */ + static Pair<String, Resources> findSystemApk(String action, PackageManager pm) { + final Intent intent = new Intent(action); + for (ResolveInfo info : pm.queryBroadcastReceivers(intent, 0)) { + if (info.activityInfo != null && + (info.activityInfo.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) != 0) { + final String packageName = info.activityInfo.packageName; + try { + final Resources res = pm.getResourcesForApplication(packageName); + return Pair.create(packageName, res); + } catch (NameNotFoundException e) { + Log.w(TAG, "Failed to find resources for " + packageName); + } + } + } + return null; + } } |